* QEMU Floppy disk emulator (Intel 82078)
*
* Copyright (c) 2003, 2007 Jocelyn Mayer
+ * Copyright (c) 2008 Hervé Poussineau
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* The controller is used in Sun4m systems in a slightly different
* way. There are changes in DOR register and DMA is not available.
*/
-#include "vl.h"
+#include "hw.h"
+#include "fdc.h"
+#include "block.h"
+#include "qemu-timer.h"
+#include "isa.h"
/********************************************************/
/* debug Floppy devices */
}
static int _fd_sector (uint8_t head, uint8_t track,
- uint8_t sect, uint8_t last_sect)
+ uint8_t sect, uint8_t last_sect)
{
return (((track * 2) + head) * last_sect) + sect - 1;
}
int ret;
if (track > drv->max_track ||
- (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
+ (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) {
FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
head, track, sect, 1,
(drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1,
}
#endif
drv->head = head;
- if (drv->track != track)
- ret = 1;
+ if (drv->track != track)
+ ret = 1;
drv->track = track;
drv->sect = sect;
}
uint8_t last_sect;
uint8_t max_track;
uint8_t max_head;
- const unsigned char *str;
+ const char *str;
} fd_format_t;
static const fd_format_t fd_formats[] = {
static void fd_revalidate (fdrive_t *drv)
{
const fd_format_t *parse;
- int64_t nb_sectors, size;
+ uint64_t nb_sectors, size;
int i, first_match, match;
int nb_heads, max_track, last_sect, ro;
FLOPPY_DPRINTF("revalidate\n");
if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
- ro = bdrv_is_read_only(drv->bs);
- bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
- if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
- FLOPPY_DPRINTF("User defined disk (%d %d %d)",
+ ro = bdrv_is_read_only(drv->bs);
+ bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
+ if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
+ FLOPPY_DPRINTF("User defined disk (%d %d %d)",
nb_heads - 1, max_track, last_sect);
- } else {
- bdrv_get_geometry(drv->bs, &nb_sectors);
- match = -1;
- first_match = -1;
- for (i = 0;; i++) {
- parse = &fd_formats[i];
- if (parse->drive == FDRIVE_DRV_NONE)
- break;
- if (drv->drive == parse->drive ||
- drv->drive == FDRIVE_DRV_NONE) {
- size = (parse->max_head + 1) * parse->max_track *
- parse->last_sect;
- if (nb_sectors == size) {
- match = i;
- break;
- }
- if (first_match == -1)
- first_match = i;
- }
- }
- if (match == -1) {
- if (first_match == -1)
- match = 1;
- else
- match = first_match;
- parse = &fd_formats[match];
- }
- nb_heads = parse->max_head + 1;
- max_track = parse->max_track;
- last_sect = parse->last_sect;
- drv->drive = parse->drive;
- FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
+ } else {
+ bdrv_get_geometry(drv->bs, &nb_sectors);
+ match = -1;
+ first_match = -1;
+ for (i = 0;; i++) {
+ parse = &fd_formats[i];
+ if (parse->drive == FDRIVE_DRV_NONE)
+ break;
+ if (drv->drive == parse->drive ||
+ drv->drive == FDRIVE_DRV_NONE) {
+ size = (parse->max_head + 1) * parse->max_track *
+ parse->last_sect;
+ if (nb_sectors == size) {
+ match = i;
+ break;
+ }
+ if (first_match == -1)
+ first_match = i;
+ }
+ }
+ if (match == -1) {
+ if (first_match == -1)
+ match = 1;
+ else
+ match = first_match;
+ parse = &fd_formats[match];
+ }
+ nb_heads = parse->max_head + 1;
+ max_track = parse->max_track;
+ last_sect = parse->last_sect;
+ drv->drive = parse->drive;
+ FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
nb_heads, max_track, last_sect, ro ? "ro" : "rw");
- }
- if (nb_heads == 1) {
- drv->flags &= ~FDISK_DBL_SIDES;
- } else {
- drv->flags |= FDISK_DBL_SIDES;
- }
- drv->max_track = max_track;
- drv->last_sect = last_sect;
- drv->ro = ro;
+ }
+ if (nb_heads == 1) {
+ drv->flags &= ~FDISK_DBL_SIDES;
+ } else {
+ drv->flags |= FDISK_DBL_SIDES;
+ }
+ drv->max_track = max_track;
+ drv->last_sect = last_sect;
+ drv->ro = ro;
} else {
- FLOPPY_DPRINTF("No disk in drive\n");
+ FLOPPY_DPRINTF("No disk in drive\n");
drv->last_sect = 0;
- drv->max_track = 0;
- drv->flags &= ~FDISK_DBL_SIDES;
+ drv->max_track = 0;
+ drv->flags &= ~FDISK_DBL_SIDES;
}
}
FD_STATE_FORMAT = 0x40,
};
+enum {
+ FD_REG_0 = 0x00,
+ FD_REG_STATUSB = 0x01,
+ FD_REG_DOR = 0x02,
+ FD_REG_TDR = 0x03,
+ FD_REG_MSR = 0x04,
+ FD_REG_DSR = 0x04,
+ FD_REG_FIFO = 0x05,
+ FD_REG_DIR = 0x07,
+};
+
+enum {
+ FD_CMD_READ_TRACK = 0x02,
+ FD_CMD_SPECIFY = 0x03,
+ FD_CMD_SENSE_DRIVE_STATUS = 0x04,
+ FD_CMD_WRITE = 0x05,
+ FD_CMD_READ = 0x06,
+ FD_CMD_RECALIBRATE = 0x07,
+ FD_CMD_SENSE_INTERRUPT_STATUS = 0x08,
+ FD_CMD_WRITE_DELETED = 0x09,
+ FD_CMD_READ_ID = 0x0a,
+ FD_CMD_READ_DELETED = 0x0c,
+ FD_CMD_FORMAT_TRACK = 0x0d,
+ FD_CMD_DUMPREG = 0x0e,
+ FD_CMD_SEEK = 0x0f,
+ FD_CMD_VERSION = 0x10,
+ FD_CMD_SCAN_EQUAL = 0x11,
+ FD_CMD_PERPENDICULAR_MODE = 0x12,
+ FD_CMD_CONFIGURE = 0x13,
+ FD_CMD_LOCK = 0x14,
+ FD_CMD_VERIFY = 0x16,
+ FD_CMD_POWERDOWN_MODE = 0x17,
+ FD_CMD_PART_ID = 0x18,
+ FD_CMD_SCAN_LOW_OR_EQUAL = 0x19,
+ FD_CMD_SCAN_HIGH_OR_EQUAL = 0x1d,
+ FD_CMD_SAVE = 0x2c,
+ FD_CMD_OPTION = 0x33,
+ FD_CMD_RESTORE = 0x4c,
+ FD_CMD_DRIVE_SPECIFICATION_COMMAND = 0x8e,
+ FD_CMD_RELATIVE_SEEK_OUT = 0x8f,
+ FD_CMD_FORMAT_AND_WRITE = 0xcd,
+ FD_CMD_RELATIVE_SEEK_IN = 0xcf,
+};
+
+enum {
+ FD_CONFIG_PRETRK = 0xff, /* Pre-compensation set to track 0 */
+ FD_CONFIG_FIFOTHR = 0x0f, /* FIFO threshold set to 1 byte */
+ FD_CONFIG_POLL = 0x10, /* Poll enabled */
+ FD_CONFIG_EFIFO = 0x20, /* FIFO disabled */
+ FD_CONFIG_EIS = 0x40, /* No implied seeks */
+};
+
+enum {
+ FD_SR0_EQPMT = 0x10,
+ FD_SR0_SEEK = 0x20,
+ FD_SR0_ABNTERM = 0x40,
+ FD_SR0_INVCMD = 0x80,
+ FD_SR0_RDYCHG = 0xc0,
+};
+
+enum {
+ FD_DOR_SELMASK = 0x01,
+ FD_DOR_nRESET = 0x04,
+ FD_DOR_DMAEN = 0x08,
+ FD_DOR_MOTEN0 = 0x10,
+ FD_DOR_MOTEN1 = 0x20,
+ FD_DOR_MOTEN2 = 0x40,
+ FD_DOR_MOTEN3 = 0x80,
+};
+
+enum {
+ FD_TDR_BOOTSEL = 0x0c,
+};
+
+enum {
+ FD_DSR_DRATEMASK= 0x03,
+ FD_DSR_PWRDOWN = 0x40,
+ FD_DSR_SWRESET = 0x80,
+};
+
+enum {
+ FD_MSR_DRV0BUSY = 0x01,
+ FD_MSR_DRV1BUSY = 0x02,
+ FD_MSR_DRV2BUSY = 0x04,
+ FD_MSR_DRV3BUSY = 0x08,
+ FD_MSR_CMDBUSY = 0x10,
+ FD_MSR_NONDMA = 0x20,
+ FD_MSR_DIO = 0x40,
+ FD_MSR_RQM = 0x80,
+};
+
+enum {
+ FD_DIR_DSKCHG = 0x80,
+};
+
#define FD_STATE(state) ((state) & FD_STATE_STATE)
#define FD_SET_STATE(state, new_state) \
do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0)
uint8_t cur_drv;
uint8_t bootsel;
/* Command FIFO */
- uint8_t fifo[FD_SECTOR_LEN];
+ uint8_t *fifo;
uint32_t data_pos;
uint32_t data_len;
uint8_t data_state;
uint32_t retval;
switch (reg & 0x07) {
- case 0x00:
+ case FD_REG_0:
if (fdctrl->sun4m) {
// Identify to Linux as S82078B
retval = fdctrl_read_statusB(fdctrl);
} else {
retval = (uint32_t)(-1);
}
- break;
- case 0x01:
- retval = fdctrl_read_statusB(fdctrl);
- break;
- case 0x02:
- retval = fdctrl_read_dor(fdctrl);
- break;
- case 0x03:
+ break;
+ case FD_REG_STATUSB:
+ retval = fdctrl_read_statusB(fdctrl);
+ break;
+ case FD_REG_DOR:
+ retval = fdctrl_read_dor(fdctrl);
+ break;
+ case FD_REG_TDR:
retval = fdctrl_read_tape(fdctrl);
- break;
- case 0x04:
+ break;
+ case FD_REG_MSR:
retval = fdctrl_read_main_status(fdctrl);
- break;
- case 0x05:
+ break;
+ case FD_REG_FIFO:
retval = fdctrl_read_data(fdctrl);
- break;
- case 0x07:
+ break;
+ case FD_REG_DIR:
retval = fdctrl_read_dir(fdctrl);
- break;
+ break;
default:
- retval = (uint32_t)(-1);
- break;
+ retval = (uint32_t)(-1);
+ break;
}
FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval);
FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value);
switch (reg & 0x07) {
- case 0x02:
- fdctrl_write_dor(fdctrl, value);
- break;
- case 0x03:
+ case FD_REG_DOR:
+ fdctrl_write_dor(fdctrl, value);
+ break;
+ case FD_REG_TDR:
fdctrl_write_tape(fdctrl, value);
- break;
- case 0x04:
+ break;
+ case FD_REG_DSR:
fdctrl_write_rate(fdctrl, value);
- break;
- case 0x05:
+ break;
+ case FD_REG_FIFO:
fdctrl_write_data(fdctrl, value);
- break;
+ break;
default:
- break;
+ break;
}
}
fdctrl_write_mem,
};
+static CPUReadMemoryFunc *fdctrl_mem_read_strict[3] = {
+ fdctrl_read_mem,
+ NULL,
+ NULL,
+};
+
+static CPUWriteMemoryFunc *fdctrl_mem_write_strict[3] = {
+ fdctrl_write_mem,
+ NULL,
+ NULL,
+};
+
static void fd_save (QEMUFile *f, fdrive_t *fd)
{
uint8_t tmp;
fdctrl_reset(s, 0);
}
-fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped,
- target_phys_addr_t io_base,
- BlockDriverState **fds)
+static fdctrl_t *fdctrl_init_common (qemu_irq irq, int dma_chann,
+ target_phys_addr_t io_base,
+ BlockDriverState **fds)
{
fdctrl_t *fdctrl;
- int io_mem;
int i;
FLOPPY_DPRINTF("init controller\n");
fdctrl = qemu_mallocz(sizeof(fdctrl_t));
if (!fdctrl)
return NULL;
+ fdctrl->fifo = qemu_memalign(512, FD_SECTOR_LEN);
+ if (fdctrl->fifo == NULL) {
+ qemu_free(fdctrl);
+ return NULL;
+ }
fdctrl->result_timer = qemu_new_timer(vm_clock,
fdctrl_result_timer, fdctrl);
fdctrl->irq = irq;
fdctrl->dma_chann = dma_chann;
fdctrl->io_base = io_base;
- fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */
- fdctrl->sun4m = 0;
+ fdctrl->config = FD_CONFIG_EIS | FD_CONFIG_EFIFO; /* Implicit seek, polling & FIFO enabled */
if (fdctrl->dma_chann != -1) {
fdctrl->dma_en = 1;
DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl);
} else {
fdctrl->dma_en = 0;
}
- for (i = 0; i < 2; i++) {
+ for (i = 0; i < MAX_FD; i++) {
fd_init(&fdctrl->drives[i], fds[i]);
}
fdctrl_reset(fdctrl, 0);
fdctrl->state = FD_CTRL_ACTIVE;
+ register_savevm("fdc", io_base, 1, fdc_save, fdc_load, fdctrl);
+ qemu_register_reset(fdctrl_external_reset, fdctrl);
+ for (i = 0; i < MAX_FD; i++) {
+ fd_revalidate(&fdctrl->drives[i]);
+ }
+
+ return fdctrl;
+}
+
+fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped,
+ target_phys_addr_t io_base,
+ BlockDriverState **fds)
+{
+ fdctrl_t *fdctrl;
+ int io_mem;
+
+ fdctrl = fdctrl_init_common(irq, dma_chann, io_base, fds);
+
+ fdctrl->sun4m = 0;
if (mem_mapped) {
- io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write, fdctrl);
+ io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write,
+ fdctrl);
cpu_register_physical_memory(io_base, 0x08, io_mem);
} else {
register_ioport_read((uint32_t)io_base + 0x01, 5, 1, &fdctrl_read,
register_ioport_write((uint32_t)io_base + 0x07, 1, 1, &fdctrl_write,
fdctrl);
}
- register_savevm("fdc", io_base, 1, fdc_save, fdc_load, fdctrl);
- qemu_register_reset(fdctrl_external_reset, fdctrl);
- for (i = 0; i < 2; i++) {
- fd_revalidate(&fdctrl->drives[i]);
- }
return fdctrl;
}
+static void fdctrl_handle_tc(void *opaque, int irq, int level)
+{
+ //fdctrl_t *s = opaque;
+
+ if (level) {
+ // XXX
+ FLOPPY_DPRINTF("TC pulsed\n");
+ }
+}
+
fdctrl_t *sun4m_fdctrl_init (qemu_irq irq, target_phys_addr_t io_base,
- BlockDriverState **fds)
+ BlockDriverState **fds, qemu_irq *fdc_tc)
{
fdctrl_t *fdctrl;
+ int io_mem;
- fdctrl = fdctrl_init(irq, 0, 1, io_base, fds);
+ fdctrl = fdctrl_init_common(irq, 0, io_base, fds);
fdctrl->sun4m = 1;
+ io_mem = cpu_register_io_memory(0, fdctrl_mem_read_strict,
+ fdctrl_mem_write_strict,
+ fdctrl);
+ cpu_register_physical_memory(io_base, 0x08, io_mem);
+ *fdc_tc = *qemu_allocate_irqs(fdctrl_handle_tc, fdctrl, 1);
return fdctrl;
}
{
// Sparc mutation
if (fdctrl->sun4m && !fdctrl->dma_en) {
- fdctrl->state &= ~FD_CTRL_BUSY;
- fdctrl->int_status = status;
- return;
+ fdctrl->state &= ~FD_CTRL_BUSY;
+ fdctrl->int_status = status;
+ return;
}
if (~(fdctrl->state & FD_CTRL_INTR)) {
qemu_set_irq(fdctrl->irq, 1);
fd_reset(&fdctrl->drives[i]);
fdctrl_reset_fifo(fdctrl);
if (do_irq)
- fdctrl_raise_irq(fdctrl, 0xc0);
+ fdctrl_raise_irq(fdctrl, FD_SR0_RDYCHG);
}
static inline fdrive_t *drv0 (fdctrl_t *fdctrl)
/* Drive motors state indicators */
if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
- retval |= 1 << 5;
+ retval |= FD_DOR_MOTEN0;
if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
- retval |= 1 << 4;
+ retval |= FD_DOR_MOTEN1;
/* DMA enable */
- retval |= fdctrl->dma_en << 3;
+ if (fdctrl->dma_en)
+ retval |= FD_DOR_DMAEN;
/* Reset indicator */
- retval |= (fdctrl->state & FD_CTRL_RESET) == 0 ? 0x04 : 0;
+ if (!(fdctrl->state & FD_CTRL_RESET))
+ retval |= FD_DOR_nRESET;
/* Selected drive */
retval |= fdctrl->cur_drv;
FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
{
/* Reset mode */
if (fdctrl->state & FD_CTRL_RESET) {
- if (!(value & 0x04)) {
+ if (!(value & FD_DOR_nRESET)) {
FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
return;
}
}
FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
/* Drive motors state indicators */
- if (value & 0x20)
+ if (value & FD_DOR_MOTEN1)
fd_start(drv1(fdctrl));
else
fd_stop(drv1(fdctrl));
- if (value & 0x10)
+ if (value & FD_DOR_MOTEN0)
fd_start(drv0(fdctrl));
else
fd_stop(drv0(fdctrl));
/* DMA enable */
#if 0
if (fdctrl->dma_chann != -1)
- fdctrl->dma_en = 1 - ((value >> 3) & 1);
+ fdctrl->dma_en = value & FD_DOR_DMAEN ? 1 : 0;
#endif
/* Reset */
- if (!(value & 0x04)) {
+ if (!(value & FD_DOR_nRESET)) {
if (!(fdctrl->state & FD_CTRL_RESET)) {
FLOPPY_DPRINTF("controller enter RESET state\n");
fdctrl->state |= FD_CTRL_RESET;
}
}
/* Selected drive */
- fdctrl->cur_drv = value & 1;
+ fdctrl->cur_drv = value & FD_DOR_SELMASK;
}
/* Tape drive register : 0x03 */
}
FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
/* Disk boot selection indicator */
- fdctrl->bootsel = (value >> 2) & 1;
+ fdctrl->bootsel = (value & FD_TDR_BOOTSEL) >> 2;
/* Tape indicators: never allow */
}
fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET);
if (!(fdctrl->state & FD_CTRL_BUSY)) {
/* Data transfer allowed */
- retval |= 0x80;
+ retval |= FD_MSR_RQM;
/* Data transfer direction indicator */
if (fdctrl->data_dir == FD_DIR_READ)
- retval |= 0x40;
+ retval |= FD_MSR_DIO;
}
- /* Should handle 0x20 for SPECIFY command */
+ /* Should handle FD_MSR_NONDMA for SPECIFY command */
/* Command busy indicator */
if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA ||
FD_STATE(fdctrl->data_state) == FD_STATE_STATUS)
- retval |= 0x10;
+ retval |= FD_MSR_CMDBUSY;
FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
return retval;
{
/* Reset mode */
if (fdctrl->state & FD_CTRL_RESET) {
- FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
- return;
- }
+ FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
+ return;
+ }
FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
/* Reset: autoclear */
- if (value & 0x80) {
+ if (value & FD_DSR_SWRESET) {
fdctrl->state |= FD_CTRL_RESET;
fdctrl_reset(fdctrl, 1);
fdctrl->state &= ~FD_CTRL_RESET;
}
- if (value & 0x40) {
+ if (value & FD_DSR_PWRDOWN) {
fdctrl->state |= FD_CTRL_SLEEP;
fdctrl_reset(fdctrl, 1);
}
-// fdctrl.precomp = (value >> 2) & 0x07;
}
static int fdctrl_media_changed(fdrive_t *drv)
{
int ret;
+
if (!drv->bs)
return 0;
ret = bdrv_media_changed(drv->bs);
uint32_t retval = 0;
if (fdctrl_media_changed(drv0(fdctrl)) ||
- fdctrl_media_changed(drv1(fdctrl)))
- retval |= 0x80;
+ fdctrl_media_changed(drv1(fdctrl)))
+ retval |= FD_DIR_DSKCHG;
if (retval != 0)
FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
}
/* Set an error: unimplemented/unknown command */
-static void fdctrl_unimplemented (fdctrl_t *fdctrl)
+static void fdctrl_unimplemented (fdctrl_t *fdctrl, int direction)
{
#if 0
fdrive_t *cur_drv;
cur_drv = get_cur_drv(fdctrl);
- fdctrl->fifo[0] = 0x60 | (cur_drv->head << 2) | fdctrl->cur_drv;
+ fdctrl->fifo[0] = FD_SR0_ABNTERM | FD_SR0_SEEK | (cur_drv->head << 2) | fdctrl->cur_drv;
fdctrl->fifo[1] = 0x00;
fdctrl->fifo[2] = 0x00;
fdctrl_set_fifo(fdctrl, 3, 1);
#else
// fdctrl_reset_fifo(fdctrl);
- fdctrl->fifo[0] = 0x80;
+ fdctrl->fifo[0] = FD_SR0_INVCMD;
fdctrl_set_fifo(fdctrl, 1, 0);
#endif
}
/* Callback for transfer end (stop or abort) */
static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0,
- uint8_t status1, uint8_t status2)
+ uint8_t status1, uint8_t status2)
{
fdrive_t *cur_drv;
uint8_t kh, kt, ks;
int did_seek;
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
kt = fdctrl->fifo[2];
kh = fdctrl->fifo[3];
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
case 2:
/* sect too big */
- fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 3:
/* track too big */
- fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x80, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 4:
/* No seek enabled */
- fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
if (fdctrl->fifo[5] == 00) {
fdctrl->data_len = fdctrl->fifo[8];
} else {
- int tmp;
+ int tmp;
fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]);
tmp = (cur_drv->last_sect - ks + 1);
if (fdctrl->fifo[0] & 0x80)
tmp += cur_drv->last_sect;
- fdctrl->data_len *= tmp;
+ fdctrl->data_len *= tmp;
}
fdctrl->eot = fdctrl->fifo[6];
if (fdctrl->dma_en) {
dma_mode = DMA_get_channel_mode(fdctrl->dma_chann);
dma_mode = (dma_mode >> 2) & 3;
FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
- dma_mode, direction,
+ dma_mode, direction,
(128 << fdctrl->fifo[5]) *
- (cur_drv->last_sect - ks + 1), fdctrl->data_len);
+ (cur_drv->last_sect - ks + 1), fdctrl->data_len);
if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
direction == FD_DIR_SCANH) && dma_mode == 0) ||
(direction == FD_DIR_WRITE && dma_mode == 2) ||
DMA_schedule(fdctrl->dma_chann);
return;
} else {
- FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
+ FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
}
}
FLOPPY_DPRINTF("start non-DMA transfer\n");
/* We don't handle deleted data,
* so we don't return *ANYTHING*
*/
- fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
}
/* handlers for DMA transfers */
if (dma_len > fdctrl->data_len)
dma_len = fdctrl->data_len;
if (cur_drv->bs == NULL) {
- if (fdctrl->data_dir == FD_DIR_WRITE)
- fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
- else
- fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
- len = 0;
+ if (fdctrl->data_dir == FD_DIR_WRITE)
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
+ else
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
+ len = 0;
goto transfer_error;
}
rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
"(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
fdctrl->data_len, fdctrl->cur_drv, cur_drv->head,
cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
- fd_sector(cur_drv) * 512);
+ fd_sector(cur_drv) * FD_SECTOR_LEN);
if (fdctrl->data_dir != FD_DIR_WRITE ||
- len < FD_SECTOR_LEN || rel_pos != 0) {
+ len < FD_SECTOR_LEN || rel_pos != 0) {
/* READ & SCAN commands and realign to a sector for WRITE */
if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
- fdctrl->fifo, 1) < 0) {
+ fdctrl->fifo, 1) < 0) {
FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
fd_sector(cur_drv));
/* Sure, image size is too small... */
memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
}
}
- switch (fdctrl->data_dir) {
- case FD_DIR_READ:
- /* READ commands */
+ switch (fdctrl->data_dir) {
+ case FD_DIR_READ:
+ /* READ commands */
DMA_write_memory (nchan, fdctrl->fifo + rel_pos,
fdctrl->data_pos, len);
-/* cpu_physical_memory_write(addr + fdctrl->data_pos, */
-/* fdctrl->fifo + rel_pos, len); */
- break;
- case FD_DIR_WRITE:
+ break;
+ case FD_DIR_WRITE:
/* WRITE commands */
DMA_read_memory (nchan, fdctrl->fifo + rel_pos,
fdctrl->data_pos, len);
-/* cpu_physical_memory_read(addr + fdctrl->data_pos, */
-/* fdctrl->fifo + rel_pos, len); */
if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
- fdctrl->fifo, 1) < 0) {
+ fdctrl->fifo, 1) < 0) {
FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
- fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
goto transfer_error;
}
- break;
- default:
- /* SCAN commands */
+ break;
+ default:
+ /* SCAN commands */
{
- uint8_t tmpbuf[FD_SECTOR_LEN];
+ uint8_t tmpbuf[FD_SECTOR_LEN];
int ret;
DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len);
-/* cpu_physical_memory_read(addr + fdctrl->data_pos, */
-/* tmpbuf, len); */
ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len);
if (ret == 0) {
status2 = 0x08;
goto end_transfer;
}
}
- break;
+ break;
}
- fdctrl->data_pos += len;
- rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
+ fdctrl->data_pos += len;
+ rel_pos = fdctrl->data_pos % FD_SECTOR_LEN;
if (rel_pos == 0) {
/* Seek to next sector */
- FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
- cur_drv->head, cur_drv->track, cur_drv->sect,
- fd_sector(cur_drv),
- fdctrl->data_pos - len);
+ FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
+ cur_drv->head, cur_drv->track, cur_drv->sect,
+ fd_sector(cur_drv),
+ fdctrl->data_pos - len);
/* XXX: cur_drv->sect >= cur_drv->last_sect should be an
error in fact */
if (cur_drv->sect >= cur_drv->last_sect ||
cur_drv->sect == fdctrl->eot) {
- cur_drv->sect = 1;
- if (FD_MULTI_TRACK(fdctrl->data_state)) {
- if (cur_drv->head == 0 &&
- (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
+ cur_drv->sect = 1;
+ if (FD_MULTI_TRACK(fdctrl->data_state)) {
+ if (cur_drv->head == 0 &&
+ (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
cur_drv->head = 1;
} else {
cur_drv->head = 0;
- cur_drv->track++;
- if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
- break;
+ cur_drv->track++;
+ if ((cur_drv->flags & FDISK_DBL_SIDES) == 0)
+ break;
}
} else {
cur_drv->track++;
break;
}
- FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
- cur_drv->head, cur_drv->track,
- cur_drv->sect, fd_sector(cur_drv));
+ FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
+ cur_drv->head, cur_drv->track,
+ cur_drv->sect, fd_sector(cur_drv));
} else {
cur_drv->sect++;
}
}
}
-end_transfer:
+ end_transfer:
len = fdctrl->data_pos - start_pos;
FLOPPY_DPRINTF("end transfer %d %d %d\n",
- fdctrl->data_pos, len, fdctrl->data_len);
+ fdctrl->data_pos, len, fdctrl->data_len);
if (fdctrl->data_dir == FD_DIR_SCANE ||
fdctrl->data_dir == FD_DIR_SCANL ||
fdctrl->data_dir == FD_DIR_SCANH)
status2 = 0x08;
if (FD_DID_SEEK(fdctrl->data_state))
- status0 |= 0x20;
+ status0 |= FD_SR0_SEEK;
fdctrl->data_len -= len;
// if (fdctrl->data_len == 0)
fdctrl_stop_transfer(fdctrl, status0, status1, status2);
-transfer_error:
+ transfer_error:
return len;
}
len = fdctrl->data_len - fdctrl->data_pos;
if (len > FD_SECTOR_LEN)
len = FD_SECTOR_LEN;
- bdrv_read(cur_drv->bs, fd_sector(cur_drv),
- fdctrl->fifo, len);
+ bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1);
}
}
retval = fdctrl->fifo[pos];
* then from status mode to command mode
*/
if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
- fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
} else {
fdctrl_reset_fifo(fdctrl);
fdctrl_reset_irq(fdctrl);
uint8_t kh, kt, ks;
int did_seek;
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
cur_drv = get_cur_drv(fdctrl);
kt = fdctrl->fifo[6];
kh = fdctrl->fifo[7];
fdctrl->cur_drv, kh, kt, ks,
_fd_sector(kh, kt, ks, cur_drv->last_sect));
did_seek = 0;
- switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) {
+ switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
case 2:
/* sect too big */
- fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 3:
/* track too big */
- fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x80, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
return;
case 4:
/* No seek enabled */
- fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM, 0x00, 0x00);
fdctrl->fifo[3] = kt;
fdctrl->fifo[4] = kh;
fdctrl->fifo[5] = ks;
if (cur_drv->bs == NULL ||
bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) {
FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
- fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK, 0x00, 0x00);
} else {
- if (cur_drv->sect == cur_drv->last_sect) {
- fdctrl->data_state &= ~FD_STATE_FORMAT;
- /* Last sector done */
- if (FD_DID_SEEK(fdctrl->data_state))
- fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
- else
- fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
- } else {
- /* More to do */
- fdctrl->data_pos = 0;
- fdctrl->data_len = 4;
- }
+ if (cur_drv->sect == cur_drv->last_sect) {
+ fdctrl->data_state &= ~FD_STATE_FORMAT;
+ /* Last sector done */
+ if (FD_DID_SEEK(fdctrl->data_state))
+ fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
+ else
+ fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+ } else {
+ /* More to do */
+ fdctrl->data_pos = 0;
+ fdctrl->data_len = 4;
+ }
}
}
+static void fdctrl_handle_lock (fdctrl_t *fdctrl, int direction)
+{
+ fdctrl->lock = (fdctrl->fifo[0] & 0x80) ? 1 : 0;
+ fdctrl->fifo[0] = fdctrl->lock << 4;
+ fdctrl_set_fifo(fdctrl, 1, fdctrl->lock);
+}
+
+static void fdctrl_handle_dumpreg (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ /* Drives position */
+ fdctrl->fifo[0] = drv0(fdctrl)->track;
+ fdctrl->fifo[1] = drv1(fdctrl)->track;
+ fdctrl->fifo[2] = 0;
+ fdctrl->fifo[3] = 0;
+ /* timers */
+ fdctrl->fifo[4] = fdctrl->timer0;
+ fdctrl->fifo[5] = (fdctrl->timer1 << 1) | fdctrl->dma_en;
+ fdctrl->fifo[6] = cur_drv->last_sect;
+ fdctrl->fifo[7] = (fdctrl->lock << 7) |
+ (cur_drv->perpendicular << 2);
+ fdctrl->fifo[8] = fdctrl->config;
+ fdctrl->fifo[9] = fdctrl->precomp_trk;
+ fdctrl_set_fifo(fdctrl, 10, 0);
+}
+
+static void fdctrl_handle_version (fdctrl_t *fdctrl, int direction)
+{
+ /* Controller's version */
+ fdctrl->fifo[0] = fdctrl->version;
+ fdctrl_set_fifo(fdctrl, 1, 1);
+}
+
+static void fdctrl_handle_partid (fdctrl_t *fdctrl, int direction)
+{
+ fdctrl->fifo[0] = 0x41; /* Stepping 1 */
+ fdctrl_set_fifo(fdctrl, 1, 0);
+}
+
+static void fdctrl_handle_restore (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ /* Drives position */
+ drv0(fdctrl)->track = fdctrl->fifo[3];
+ drv1(fdctrl)->track = fdctrl->fifo[4];
+ /* timers */
+ fdctrl->timer0 = fdctrl->fifo[7];
+ fdctrl->timer1 = fdctrl->fifo[8];
+ cur_drv->last_sect = fdctrl->fifo[9];
+ fdctrl->lock = fdctrl->fifo[10] >> 7;
+ cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
+ fdctrl->config = fdctrl->fifo[11];
+ fdctrl->precomp_trk = fdctrl->fifo[12];
+ fdctrl->pwrd = fdctrl->fifo[13];
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_save (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ fdctrl->fifo[0] = 0;
+ fdctrl->fifo[1] = 0;
+ /* Drives position */
+ fdctrl->fifo[2] = drv0(fdctrl)->track;
+ fdctrl->fifo[3] = drv1(fdctrl)->track;
+ fdctrl->fifo[4] = 0;
+ fdctrl->fifo[5] = 0;
+ /* timers */
+ fdctrl->fifo[6] = fdctrl->timer0;
+ fdctrl->fifo[7] = fdctrl->timer1;
+ fdctrl->fifo[8] = cur_drv->last_sect;
+ fdctrl->fifo[9] = (fdctrl->lock << 7) |
+ (cur_drv->perpendicular << 2);
+ fdctrl->fifo[10] = fdctrl->config;
+ fdctrl->fifo[11] = fdctrl->precomp_trk;
+ fdctrl->fifo[12] = fdctrl->pwrd;
+ fdctrl->fifo[13] = 0;
+ fdctrl->fifo[14] = 0;
+ fdctrl_set_fifo(fdctrl, 15, 1);
+}
+
+static void fdctrl_handle_readid (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ /* XXX: should set main status register to busy */
+ cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
+ qemu_mod_timer(fdctrl->result_timer,
+ qemu_get_clock(vm_clock) + (ticks_per_sec / 50));
+}
+
+static void fdctrl_handle_format_track (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv;
+
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
+ cur_drv = get_cur_drv(fdctrl);
+ fdctrl->data_state |= FD_STATE_FORMAT;
+ if (fdctrl->fifo[0] & 0x80)
+ fdctrl->data_state |= FD_STATE_MULTI;
+ else
+ fdctrl->data_state &= ~FD_STATE_MULTI;
+ fdctrl->data_state &= ~FD_STATE_SEEK;
+ cur_drv->bps =
+ fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
+#if 0
+ cur_drv->last_sect =
+ cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
+ fdctrl->fifo[3] / 2;
+#else
+ cur_drv->last_sect = fdctrl->fifo[3];
+#endif
+ /* TODO: implement format using DMA expected by the Bochs BIOS
+ * and Linux fdformat (read 3 bytes per sector via DMA and fill
+ * the sector with the specified fill byte
+ */
+ fdctrl->data_state &= ~FD_STATE_FORMAT;
+ fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
+}
+
+static void fdctrl_handle_specify (fdctrl_t *fdctrl, int direction)
+{
+ fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
+ fdctrl->timer1 = fdctrl->fifo[2] >> 1;
+ fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_sense_drive_status (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv;
+
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
+ cur_drv = get_cur_drv(fdctrl);
+ cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
+ /* 1 Byte status back */
+ fdctrl->fifo[0] = (cur_drv->ro << 6) |
+ (cur_drv->track == 0 ? 0x10 : 0x00) |
+ (cur_drv->head << 2) |
+ fdctrl->cur_drv |
+ 0x28;
+ fdctrl_set_fifo(fdctrl, 1, 0);
+}
+
+static void fdctrl_handle_recalibrate (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv;
+
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
+ cur_drv = get_cur_drv(fdctrl);
+ fd_recalibrate(cur_drv);
+ fdctrl_reset_fifo(fdctrl);
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+}
+
+static void fdctrl_handle_sense_interrupt_status (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+#if 0
+ fdctrl->fifo[0] =
+ fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
+#else
+ /* XXX: int_status handling is broken for read/write
+ commands, so we do this hack. It should be suppressed
+ ASAP */
+ fdctrl->fifo[0] =
+ 0x20 | (cur_drv->head << 2) | fdctrl->cur_drv;
+#endif
+ fdctrl->fifo[1] = cur_drv->track;
+ fdctrl_set_fifo(fdctrl, 2, 0);
+ fdctrl_reset_irq(fdctrl);
+ fdctrl->int_status = FD_SR0_RDYCHG;
+}
+
+static void fdctrl_handle_seek (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv;
+
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
+ cur_drv = get_cur_drv(fdctrl);
+ fd_start(cur_drv);
+ if (fdctrl->fifo[2] <= cur_drv->track)
+ cur_drv->dir = 1;
+ else
+ cur_drv->dir = 0;
+ fdctrl_reset_fifo(fdctrl);
+ if (fdctrl->fifo[2] > cur_drv->max_track) {
+ fdctrl_raise_irq(fdctrl, FD_SR0_ABNTERM | FD_SR0_SEEK);
+ } else {
+ cur_drv->track = fdctrl->fifo[2];
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+ }
+}
+
+static void fdctrl_handle_perpendicular_mode (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ if (fdctrl->fifo[1] & 0x80)
+ cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_configure (fdctrl_t *fdctrl, int direction)
+{
+ fdctrl->config = fdctrl->fifo[2];
+ fdctrl->precomp_trk = fdctrl->fifo[3];
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_powerdown_mode (fdctrl_t *fdctrl, int direction)
+{
+ fdctrl->pwrd = fdctrl->fifo[1];
+ fdctrl->fifo[0] = fdctrl->fifo[1];
+ fdctrl_set_fifo(fdctrl, 1, 1);
+}
+
+static void fdctrl_handle_option (fdctrl_t *fdctrl, int direction)
+{
+ /* No result back */
+ fdctrl_reset_fifo(fdctrl);
+}
+
+static void fdctrl_handle_drive_specification_command (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
+ /* Command parameters done */
+ if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
+ fdctrl->fifo[0] = fdctrl->fifo[1];
+ fdctrl->fifo[2] = 0;
+ fdctrl->fifo[3] = 0;
+ fdctrl_set_fifo(fdctrl, 4, 1);
+ } else {
+ fdctrl_reset_fifo(fdctrl);
+ }
+ } else if (fdctrl->data_len > 7) {
+ /* ERROR */
+ fdctrl->fifo[0] = 0x80 |
+ (cur_drv->head << 2) | fdctrl->cur_drv;
+ fdctrl_set_fifo(fdctrl, 1, 1);
+ }
+}
+
+static void fdctrl_handle_relative_seek_out (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
+ cur_drv = get_cur_drv(fdctrl);
+ fd_start(cur_drv);
+ cur_drv->dir = 0;
+ if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
+ cur_drv->track = cur_drv->max_track - 1;
+ } else {
+ cur_drv->track += fdctrl->fifo[2];
+ }
+ fdctrl_reset_fifo(fdctrl);
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+}
+
+static void fdctrl_handle_relative_seek_in (fdctrl_t *fdctrl, int direction)
+{
+ fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
+ fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
+ cur_drv = get_cur_drv(fdctrl);
+ fd_start(cur_drv);
+ cur_drv->dir = 1;
+ if (fdctrl->fifo[2] > cur_drv->track) {
+ cur_drv->track = 0;
+ } else {
+ cur_drv->track -= fdctrl->fifo[2];
+ }
+ fdctrl_reset_fifo(fdctrl);
+ /* Raise Interrupt */
+ fdctrl_raise_irq(fdctrl, FD_SR0_SEEK);
+}
+
static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value)
{
fdrive_t *cur_drv;
+ int pos;
+ static const struct {
+ uint8_t value;
+ uint8_t mask;
+ const char* name;
+ int parameters;
+ void (*handler)(fdctrl_t *fdctrl, int direction);
+ int parameter;
+ } commands[] = {
+ { FD_CMD_READ, 0x1f, "READ", 8, fdctrl_start_transfer, FD_DIR_READ },
+ { FD_CMD_WRITE, 0x3f, "WRITE", 8, fdctrl_start_transfer, FD_DIR_WRITE },
+ { FD_CMD_SEEK, 0xff, "SEEK", 2, fdctrl_handle_seek },
+ { FD_CMD_SENSE_INTERRUPT_STATUS, 0xff, "SENSE INTERRUPT STATUS", 0, fdctrl_handle_sense_interrupt_status },
+ { FD_CMD_RECALIBRATE, 0xff, "RECALIBRATE", 1, fdctrl_handle_recalibrate },
+ { FD_CMD_FORMAT_TRACK, 0xbf, "FORMAT TRACK", 5, fdctrl_handle_format_track },
+ { FD_CMD_READ_TRACK, 0xbf, "READ TRACK", 8, fdctrl_start_transfer, FD_DIR_READ },
+ { FD_CMD_RESTORE, 0xff, "RESTORE", 17, fdctrl_handle_restore }, /* part of READ DELETED DATA */
+ { FD_CMD_SAVE, 0xff, "SAVE", 0, fdctrl_handle_save }, /* part of READ DELETED DATA */
+ { FD_CMD_READ_DELETED, 0x1f, "READ DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_READ },
+ { FD_CMD_SCAN_EQUAL, 0x1f, "SCAN EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANE },
+ { FD_CMD_VERIFY, 0x1f, "VERIFY", 8, fdctrl_unimplemented },
+ { FD_CMD_SCAN_LOW_OR_EQUAL, 0x1f, "SCAN LOW OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANL },
+ { FD_CMD_SCAN_HIGH_OR_EQUAL, 0x1f, "SCAN HIGH OR EQUAL", 8, fdctrl_start_transfer, FD_DIR_SCANH },
+ { FD_CMD_WRITE_DELETED, 0x3f, "WRITE DELETED DATA", 8, fdctrl_start_transfer_del, FD_DIR_WRITE },
+ { FD_CMD_READ_ID, 0xbf, "READ ID", 1, fdctrl_handle_readid },
+ { FD_CMD_SPECIFY, 0xff, "SPECIFY", 2, fdctrl_handle_specify },
+ { FD_CMD_SENSE_DRIVE_STATUS, 0xff, "SENSE DRIVE STATUS", 1, fdctrl_handle_sense_drive_status },
+ { FD_CMD_PERPENDICULAR_MODE, 0xff, "PERPENDICULAR MODE", 1, fdctrl_handle_perpendicular_mode },
+ { FD_CMD_CONFIGURE, 0xff, "CONFIGURE", 3, fdctrl_handle_configure },
+ { FD_CMD_POWERDOWN_MODE, 0xff, "POWERDOWN MODE", 2, fdctrl_handle_powerdown_mode },
+ { FD_CMD_OPTION, 0xff, "OPTION", 1, fdctrl_handle_option },
+ { FD_CMD_DRIVE_SPECIFICATION_COMMAND, 0xff, "DRIVE SPECIFICATION COMMAND", 5, fdctrl_handle_drive_specification_command },
+ { FD_CMD_RELATIVE_SEEK_OUT, 0xff, "RELATIVE SEEK OUT", 2, fdctrl_handle_relative_seek_out },
+ { FD_CMD_FORMAT_AND_WRITE, 0xff, "FORMAT AND WRITE", 10, fdctrl_unimplemented },
+ { FD_CMD_RELATIVE_SEEK_IN, 0xff, "RELATIVE SEEK IN", 2, fdctrl_handle_relative_seek_in },
+ { FD_CMD_LOCK, 0x7f, "LOCK", 0, fdctrl_handle_lock },
+ { FD_CMD_DUMPREG, 0xff, "DUMPREG", 0, fdctrl_handle_dumpreg },
+ { FD_CMD_VERSION, 0xff, "VERSION", 0, fdctrl_handle_version },
+ { FD_CMD_PART_ID, 0xff, "PART ID", 0, fdctrl_handle_partid },
+ { FD_CMD_WRITE, 0x1f, "WRITE (BeOS)", 8, fdctrl_start_transfer, FD_DIR_WRITE }, /* not in specification ; BeOS 4.5 bug */
+ };
cur_drv = get_cur_drv(fdctrl);
/* Reset mode */
fdctrl->fifo[fdctrl->data_pos++] = value;
if (fdctrl->data_pos % FD_SECTOR_LEN == (FD_SECTOR_LEN - 1) ||
fdctrl->data_pos == fdctrl->data_len) {
- bdrv_write(cur_drv->bs, fd_sector(cur_drv),
- fdctrl->fifo, FD_SECTOR_LEN);
+ bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1);
}
/* Switch from transfer mode to status mode
* then from status mode to command mode
*/
if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
- fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
+ fdctrl_stop_transfer(fdctrl, FD_SR0_SEEK, 0x00, 0x00);
return;
}
if (fdctrl->data_pos == 0) {
/* Command */
- switch (value & 0x5F) {
- case 0x46:
- /* READ variants */
- FLOPPY_DPRINTF("READ command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- case 0x4C:
- /* READ_DELETED variants */
- FLOPPY_DPRINTF("READ_DELETED command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- case 0x50:
- /* SCAN_EQUAL variants */
- FLOPPY_DPRINTF("SCAN_EQUAL command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- case 0x56:
- /* VERIFY variants */
- FLOPPY_DPRINTF("VERIFY command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- case 0x59:
- /* SCAN_LOW_OR_EQUAL variants */
- FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- case 0x5D:
- /* SCAN_HIGH_OR_EQUAL variants */
- FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- default:
- break;
- }
- switch (value & 0x7F) {
- case 0x45:
- /* WRITE variants */
- FLOPPY_DPRINTF("WRITE command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- case 0x49:
- /* WRITE_DELETED variants */
- FLOPPY_DPRINTF("WRITE_DELETED command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- default:
- break;
- }
- switch (value) {
- case 0x03:
- /* SPECIFY */
- FLOPPY_DPRINTF("SPECIFY command\n");
- /* 1 parameter cmd */
- fdctrl->data_len = 3;
- goto enqueue;
- case 0x04:
- /* SENSE_DRIVE_STATUS */
- FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
- /* 1 parameter cmd */
- fdctrl->data_len = 2;
- goto enqueue;
- case 0x07:
- /* RECALIBRATE */
- FLOPPY_DPRINTF("RECALIBRATE command\n");
- /* 1 parameter cmd */
- fdctrl->data_len = 2;
- goto enqueue;
- case 0x08:
- /* SENSE_INTERRUPT_STATUS */
- FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
- fdctrl->int_status);
- /* No parameters cmd: returns status if no interrupt */
-#if 0
- fdctrl->fifo[0] =
- fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
-#else
- /* XXX: int_status handling is broken for read/write
- commands, so we do this hack. It should be suppressed
- ASAP */
- fdctrl->fifo[0] =
- 0x20 | (cur_drv->head << 2) | fdctrl->cur_drv;
-#endif
- fdctrl->fifo[1] = cur_drv->track;
- fdctrl_set_fifo(fdctrl, 2, 0);
- fdctrl_reset_irq(fdctrl);
- fdctrl->int_status = 0xC0;
- return;
- case 0x0E:
- /* DUMPREG */
- FLOPPY_DPRINTF("DUMPREG command\n");
- /* Drives position */
- fdctrl->fifo[0] = drv0(fdctrl)->track;
- fdctrl->fifo[1] = drv1(fdctrl)->track;
- fdctrl->fifo[2] = 0;
- fdctrl->fifo[3] = 0;
- /* timers */
- fdctrl->fifo[4] = fdctrl->timer0;
- fdctrl->fifo[5] = (fdctrl->timer1 << 1) | fdctrl->dma_en;
- fdctrl->fifo[6] = cur_drv->last_sect;
- fdctrl->fifo[7] = (fdctrl->lock << 7) |
- (cur_drv->perpendicular << 2);
- fdctrl->fifo[8] = fdctrl->config;
- fdctrl->fifo[9] = fdctrl->precomp_trk;
- fdctrl_set_fifo(fdctrl, 10, 0);
- return;
- case 0x0F:
- /* SEEK */
- FLOPPY_DPRINTF("SEEK command\n");
- /* 2 parameters cmd */
- fdctrl->data_len = 3;
- goto enqueue;
- case 0x10:
- /* VERSION */
- FLOPPY_DPRINTF("VERSION command\n");
- /* No parameters cmd */
- /* Controller's version */
- fdctrl->fifo[0] = fdctrl->version;
- fdctrl_set_fifo(fdctrl, 1, 1);
- return;
- case 0x12:
- /* PERPENDICULAR_MODE */
- FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
- /* 1 parameter cmd */
- fdctrl->data_len = 2;
- goto enqueue;
- case 0x13:
- /* CONFIGURE */
- FLOPPY_DPRINTF("CONFIGURE command\n");
- /* 3 parameters cmd */
- fdctrl->data_len = 4;
- goto enqueue;
- case 0x14:
- /* UNLOCK */
- FLOPPY_DPRINTF("UNLOCK command\n");
- /* No parameters cmd */
- fdctrl->lock = 0;
- fdctrl->fifo[0] = 0;
- fdctrl_set_fifo(fdctrl, 1, 0);
- return;
- case 0x17:
- /* POWERDOWN_MODE */
- FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
- /* 2 parameters cmd */
- fdctrl->data_len = 3;
- goto enqueue;
- case 0x18:
- /* PART_ID */
- FLOPPY_DPRINTF("PART_ID command\n");
- /* No parameters cmd */
- fdctrl->fifo[0] = 0x41; /* Stepping 1 */
- fdctrl_set_fifo(fdctrl, 1, 0);
- return;
- case 0x2C:
- /* SAVE */
- FLOPPY_DPRINTF("SAVE command\n");
- /* No parameters cmd */
- fdctrl->fifo[0] = 0;
- fdctrl->fifo[1] = 0;
- /* Drives position */
- fdctrl->fifo[2] = drv0(fdctrl)->track;
- fdctrl->fifo[3] = drv1(fdctrl)->track;
- fdctrl->fifo[4] = 0;
- fdctrl->fifo[5] = 0;
- /* timers */
- fdctrl->fifo[6] = fdctrl->timer0;
- fdctrl->fifo[7] = fdctrl->timer1;
- fdctrl->fifo[8] = cur_drv->last_sect;
- fdctrl->fifo[9] = (fdctrl->lock << 7) |
- (cur_drv->perpendicular << 2);
- fdctrl->fifo[10] = fdctrl->config;
- fdctrl->fifo[11] = fdctrl->precomp_trk;
- fdctrl->fifo[12] = fdctrl->pwrd;
- fdctrl->fifo[13] = 0;
- fdctrl->fifo[14] = 0;
- fdctrl_set_fifo(fdctrl, 15, 1);
- return;
- case 0x33:
- /* OPTION */
- FLOPPY_DPRINTF("OPTION command\n");
- /* 1 parameter cmd */
- fdctrl->data_len = 2;
- goto enqueue;
- case 0x42:
- /* READ_TRACK */
- FLOPPY_DPRINTF("READ_TRACK command\n");
- /* 8 parameters cmd */
- fdctrl->data_len = 9;
- goto enqueue;
- case 0x4A:
- /* READ_ID */
- FLOPPY_DPRINTF("READ_ID command\n");
- /* 1 parameter cmd */
- fdctrl->data_len = 2;
- goto enqueue;
- case 0x4C:
- /* RESTORE */
- FLOPPY_DPRINTF("RESTORE command\n");
- /* 17 parameters cmd */
- fdctrl->data_len = 18;
- goto enqueue;
- case 0x4D:
- /* FORMAT_TRACK */
- FLOPPY_DPRINTF("FORMAT_TRACK command\n");
- /* 5 parameters cmd */
- fdctrl->data_len = 6;
- goto enqueue;
- case 0x8E:
- /* DRIVE_SPECIFICATION_COMMAND */
- FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
- /* 5 parameters cmd */
- fdctrl->data_len = 6;
- goto enqueue;
- case 0x8F:
- /* RELATIVE_SEEK_OUT */
- FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
- /* 2 parameters cmd */
- fdctrl->data_len = 3;
- goto enqueue;
- case 0x94:
- /* LOCK */
- FLOPPY_DPRINTF("LOCK command\n");
- /* No parameters cmd */
- fdctrl->lock = 1;
- fdctrl->fifo[0] = 0x10;
- fdctrl_set_fifo(fdctrl, 1, 1);
- return;
- case 0xCD:
- /* FORMAT_AND_WRITE */
- FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
- /* 10 parameters cmd */
- fdctrl->data_len = 11;
- goto enqueue;
- case 0xCF:
- /* RELATIVE_SEEK_IN */
- FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
- /* 2 parameters cmd */
- fdctrl->data_len = 3;
- goto enqueue;
- default:
- /* Unknown command */
- FLOPPY_ERROR("unknown command: 0x%02x\n", value);
- fdctrl_unimplemented(fdctrl);
- return;
+ for (pos = 0; pos < sizeof(commands)/sizeof(commands[0]); pos++) {
+ if ((value & commands[pos].mask) == commands[pos].value) {
+ FLOPPY_DPRINTF("%s command\n", commands[pos].name);
+ fdctrl->data_len = commands[pos].parameters + 1;
+ goto enqueue;
+ }
}
+
+ /* Unknown command */
+ FLOPPY_ERROR("unknown command: 0x%02x\n", value);
+ fdctrl_unimplemented(fdctrl, 0);
+ return;
}
-enqueue:
+ enqueue:
FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
fdctrl->fifo[fdctrl->data_pos] = value;
if (++fdctrl->data_pos == fdctrl->data_len) {
/* We now have all parameters
* and will be able to treat the command
*/
- if (fdctrl->data_state & FD_STATE_FORMAT) {
- fdctrl_format_sector(fdctrl);
- return;
- }
- switch (fdctrl->fifo[0] & 0x1F) {
- case 0x06:
- {
- /* READ variants */
- FLOPPY_DPRINTF("treat READ command\n");
- fdctrl_start_transfer(fdctrl, FD_DIR_READ);
+ if (fdctrl->data_state & FD_STATE_FORMAT) {
+ fdctrl_format_sector(fdctrl);
return;
}
- case 0x0C:
- /* READ_DELETED variants */
-// FLOPPY_DPRINTF("treat READ_DELETED command\n");
- FLOPPY_ERROR("treat READ_DELETED command\n");
- fdctrl_start_transfer_del(fdctrl, FD_DIR_READ);
- return;
- case 0x16:
- /* VERIFY variants */
-// FLOPPY_DPRINTF("treat VERIFY command\n");
- FLOPPY_ERROR("treat VERIFY command\n");
- fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00);
- return;
- case 0x10:
- /* SCAN_EQUAL variants */
-// FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
- FLOPPY_ERROR("treat SCAN_EQUAL command\n");
- fdctrl_start_transfer(fdctrl, FD_DIR_SCANE);
- return;
- case 0x19:
- /* SCAN_LOW_OR_EQUAL variants */
-// FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
- FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
- fdctrl_start_transfer(fdctrl, FD_DIR_SCANL);
- return;
- case 0x1D:
- /* SCAN_HIGH_OR_EQUAL variants */
-// FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
- FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
- fdctrl_start_transfer(fdctrl, FD_DIR_SCANH);
- return;
- default:
- break;
- }
- switch (fdctrl->fifo[0] & 0x3F) {
- case 0x05:
- /* WRITE variants */
- FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]);
- fdctrl_start_transfer(fdctrl, FD_DIR_WRITE);
- return;
- case 0x09:
- /* WRITE_DELETED variants */
-// FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
- FLOPPY_ERROR("treat WRITE_DELETED command\n");
- fdctrl_start_transfer_del(fdctrl, FD_DIR_WRITE);
- return;
- default:
- break;
- }
- switch (fdctrl->fifo[0]) {
- case 0x03:
- /* SPECIFY */
- FLOPPY_DPRINTF("treat SPECIFY command\n");
- fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF;
- fdctrl->timer1 = fdctrl->fifo[2] >> 1;
- fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ;
- /* No result back */
- fdctrl_reset_fifo(fdctrl);
- break;
- case 0x04:
- /* SENSE_DRIVE_STATUS */
- FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
- /* 1 Byte status back */
- fdctrl->fifo[0] = (cur_drv->ro << 6) |
- (cur_drv->track == 0 ? 0x10 : 0x00) |
- (cur_drv->head << 2) |
- fdctrl->cur_drv |
- 0x28;
- fdctrl_set_fifo(fdctrl, 1, 0);
- break;
- case 0x07:
- /* RECALIBRATE */
- FLOPPY_DPRINTF("treat RECALIBRATE command\n");
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fd_recalibrate(cur_drv);
- fdctrl_reset_fifo(fdctrl);
- /* Raise Interrupt */
- fdctrl_raise_irq(fdctrl, 0x20);
- break;
- case 0x0F:
- /* SEEK */
- FLOPPY_DPRINTF("treat SEEK command\n");
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fd_start(cur_drv);
- if (fdctrl->fifo[2] <= cur_drv->track)
- cur_drv->dir = 1;
- else
- cur_drv->dir = 0;
- fdctrl_reset_fifo(fdctrl);
- if (fdctrl->fifo[2] > cur_drv->max_track) {
- fdctrl_raise_irq(fdctrl, 0x60);
- } else {
- cur_drv->track = fdctrl->fifo[2];
- /* Raise Interrupt */
- fdctrl_raise_irq(fdctrl, 0x20);
- }
- break;
- case 0x12:
- /* PERPENDICULAR_MODE */
- FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
- if (fdctrl->fifo[1] & 0x80)
- cur_drv->perpendicular = fdctrl->fifo[1] & 0x7;
- /* No result back */
- fdctrl_reset_fifo(fdctrl);
- break;
- case 0x13:
- /* CONFIGURE */
- FLOPPY_DPRINTF("treat CONFIGURE command\n");
- fdctrl->config = fdctrl->fifo[2];
- fdctrl->precomp_trk = fdctrl->fifo[3];
- /* No result back */
- fdctrl_reset_fifo(fdctrl);
- break;
- case 0x17:
- /* POWERDOWN_MODE */
- FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
- fdctrl->pwrd = fdctrl->fifo[1];
- fdctrl->fifo[0] = fdctrl->fifo[1];
- fdctrl_set_fifo(fdctrl, 1, 1);
- break;
- case 0x33:
- /* OPTION */
- FLOPPY_DPRINTF("treat OPTION command\n");
- /* No result back */
- fdctrl_reset_fifo(fdctrl);
- break;
- case 0x42:
- /* READ_TRACK */
-// FLOPPY_DPRINTF("treat READ_TRACK command\n");
- FLOPPY_ERROR("treat READ_TRACK command\n");
- fdctrl_start_transfer(fdctrl, FD_DIR_READ);
- break;
- case 0x4A:
- /* READ_ID */
- FLOPPY_DPRINTF("treat READ_ID command\n");
- /* XXX: should set main status register to busy */
- cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
- qemu_mod_timer(fdctrl->result_timer,
- qemu_get_clock(vm_clock) + (ticks_per_sec / 50));
- break;
- case 0x4C:
- /* RESTORE */
- FLOPPY_DPRINTF("treat RESTORE command\n");
- /* Drives position */
- drv0(fdctrl)->track = fdctrl->fifo[3];
- drv1(fdctrl)->track = fdctrl->fifo[4];
- /* timers */
- fdctrl->timer0 = fdctrl->fifo[7];
- fdctrl->timer1 = fdctrl->fifo[8];
- cur_drv->last_sect = fdctrl->fifo[9];
- fdctrl->lock = fdctrl->fifo[10] >> 7;
- cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF;
- fdctrl->config = fdctrl->fifo[11];
- fdctrl->precomp_trk = fdctrl->fifo[12];
- fdctrl->pwrd = fdctrl->fifo[13];
- fdctrl_reset_fifo(fdctrl);
- break;
- case 0x4D:
- /* FORMAT_TRACK */
- FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fdctrl->data_state |= FD_STATE_FORMAT;
- if (fdctrl->fifo[0] & 0x80)
- fdctrl->data_state |= FD_STATE_MULTI;
- else
- fdctrl->data_state &= ~FD_STATE_MULTI;
- fdctrl->data_state &= ~FD_STATE_SEEK;
- cur_drv->bps =
- fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2];
-#if 0
- cur_drv->last_sect =
- cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
- fdctrl->fifo[3] / 2;
-#else
- cur_drv->last_sect = fdctrl->fifo[3];
-#endif
- /* TODO: implement format using DMA expected by the Bochs BIOS
- * and Linux fdformat (read 3 bytes per sector via DMA and fill
- * the sector with the specified fill byte
- */
- fdctrl->data_state &= ~FD_STATE_FORMAT;
- fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00);
- break;
- case 0x8E:
- /* DRIVE_SPECIFICATION_COMMAND */
- FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
- if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) {
- /* Command parameters done */
- if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) {
- fdctrl->fifo[0] = fdctrl->fifo[1];
- fdctrl->fifo[2] = 0;
- fdctrl->fifo[3] = 0;
- fdctrl_set_fifo(fdctrl, 4, 1);
- } else {
- fdctrl_reset_fifo(fdctrl);
- }
- } else if (fdctrl->data_len > 7) {
- /* ERROR */
- fdctrl->fifo[0] = 0x80 |
- (cur_drv->head << 2) | fdctrl->cur_drv;
- fdctrl_set_fifo(fdctrl, 1, 1);
- }
- break;
- case 0x8F:
- /* RELATIVE_SEEK_OUT */
- FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fd_start(cur_drv);
- cur_drv->dir = 0;
- if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
- cur_drv->track = cur_drv->max_track - 1;
- } else {
- cur_drv->track += fdctrl->fifo[2];
- }
- fdctrl_reset_fifo(fdctrl);
- fdctrl_raise_irq(fdctrl, 0x20);
- break;
- case 0xCD:
- /* FORMAT_AND_WRITE */
-// FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
- FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
- fdctrl_unimplemented(fdctrl);
- break;
- case 0xCF:
- /* RELATIVE_SEEK_IN */
- FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
- fdctrl->cur_drv = fdctrl->fifo[1] & 1;
- cur_drv = get_cur_drv(fdctrl);
- fd_start(cur_drv);
- cur_drv->dir = 1;
- if (fdctrl->fifo[2] > cur_drv->track) {
- cur_drv->track = 0;
- } else {
- cur_drv->track -= fdctrl->fifo[2];
+
+ for (pos = 0; pos < sizeof(commands)/sizeof(commands[0]); pos++) {
+ if ((fdctrl->fifo[0] & commands[pos].mask) == commands[pos].value) {
+ FLOPPY_DPRINTF("treat %s command\n", commands[pos].name);
+ (*commands[pos].handler)(fdctrl, commands[pos].parameter);
+ break;
}
- fdctrl_reset_fifo(fdctrl);
- /* Raise Interrupt */
- fdctrl_raise_irq(fdctrl, 0x20);
- break;
}
}
}
{
fdctrl_t *fdctrl = opaque;
fdrive_t *cur_drv = get_cur_drv(fdctrl);
+
/* Pretend we are spinning.
* This is needed for Coherent, which uses READ ID to check for
* sector interleaving.
projects / qemu.git / blobdiff